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20103+2508
POU4243

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20103+2508 POU4243

20^h 10^m 20.21^s +25° 07' 49.6" P.A. 99.00 sep 8.4 mag 11.53,13.90

Coord 2000	20103+2508		Discov num	POU4243		Comp			Coord arcsec 2000	20 10 20.21 +25 07 49.6
Date first	1899		Date last	2015		Obs	11
Pa first	114		Pa last	99		P.A. Now (θ)	99°
Sep first	6.9		Sep last	8.4		Sep. Now (ρ)	8.4"
Mag pri	11.53		Mag sec	13.90		delta mag (ΔM)	2.37		Spectral class
Pri motion ra	-003		Sec motion ra	+028
Pri motion dec	-005		Sec motion dec	+007
Notes	W

rPM=1.152

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	99.4		Precise sep	8.445		Constellation	Vulpecula		Tycho2	2158-01988-1
Gaia DR2	1833991133213154432

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20103+2508	POU4243		1997	2	101	7.9	11.53	13.90		D	201020.21+250749.6
20103+2508	POU4243		2009	3	100	8.4	11.53	13.90		D	201020.21+250749.6
20103+2508	POU4243		2010	6	100	8.0	11.53	13.90			201020.21+250749.6
20103+2508	POU4243		2015	7	99	8.5	11.53	13.90			201020.21+250749.6

If you need more information about this double, apply for a data request form to the WDS.